发明名称 |
High-gain low-noise preamplifier and associated amplification and common-mode control method |
摘要 |
A preamplifier includes a differential pair of transistors receiving a bias current having a differential input and a differential output, a first resistor coupled to a first differential output node, a first transistor having a current path coupled between the first resistor and a power supply, a second resistor coupled to the first differential output node, a second transistor having a current path coupled between the second resistor and the power supply, a third resistor coupled to a second differential output node, a third transistor having a current path coupled between the third resistor and the power supply, a fourth resistor coupled to the second differential output node, and a fourth transistor having a current path coupled between the fourth resistor and the power supply, wherein a source of the second and third transistors are coupled together. |
申请公布号 |
US8928408(B2) |
申请公布日期 |
2015.01.06 |
申请号 |
US201313749488 |
申请日期 |
2013.01.24 |
申请人 |
Aeroflex Colorado Springs Inc. |
发明人 |
Zanchi Alfio;Hisano Shinichi |
分类号 |
H03F3/45;H03F3/00;H03F3/195 |
主分类号 |
H03F3/45 |
代理机构 |
Hogan Lovells US LLP |
代理人 |
Meza Peter J.;Hogan Lovells US LLP |
主权项 |
1. A preamplifier comprising:
a differential pair of transistors having a differential input and a differential output; a first resistor coupled to a first differential output node; a first transistor having a current path coupled between the first resistor and a power supply; a second resistor coupled to the first differential output node; a second transistor having a current path coupled between the second resistor and the power supply; a third resistor coupled to a second differential output node; a third transistor having a current path coupled between the third resistor and the power supply; a fourth resistor coupled to the second differential output node; and a fourth transistor having a current path coupled between the fourth resistor and the power supply, wherein a source of the second and third transistors are coupled together. |
地址 |
Colorado Springs CO US |